/*
 * The MIT License
 *
 * Copyright 2014 David Rodenas Pico.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package edu.uoc.sd.fr14.imesg;

import java.io.Serializable;

import edu.uoc.sd.fr14.actors.Server;
import edu.uoc.sd.fr14.mesg.MessageForServer;
import edu.uoc.sd.fr14.mesg.TargetId;
import edu.uoc.sd.fr14.mesg.TargetedMessage;
import edu.uoc.sd.fr14.model.CustomerId;
import edu.uoc.sd.fr14.model.FlightId;
import edu.uoc.sd.fr14.model.ProxyId;


/**
 * Sends a seat operation to another server.
 * May be sent by a follower to the leader, or sent by a customer to any server.
 * 
 * @see Server#seat(FlightId, CustomerId, ProxyId)
 * @author drodenas
 */
public class SeatMessage extends TargetedMessage implements MessageForServer,Serializable {
	private static final long serialVersionUID = 1494401562102607006L;
    protected SeatMessage() { this.flight = null; this.customer = null; this.from = null; } // for serializer
	
	private final FlightId flight;
    private final CustomerId customer;
    private final ProxyId from;

    /**
     * Sends a seat operation to another server.
     * May be sent by a follower to the leader, or sent by a customer to any server.
     * 
     * @param target   server id target
     * @param flight   flight to seat
     * @param customer customer to seat
     * @param from     from which server if originated in the follower or customer if originated in the customer
     * @see Server#seat(FlightId, CustomerId, ProxyId)
     */
    public SeatMessage(TargetId target, FlightId flight, CustomerId customer, ProxyId from) {
        super(target);
        if (flight == null) throw new NullPointerException("Illegal argument: flight cannot be null");
        if (customer == null) throw new NullPointerException("Illegal argument: customer cannot be null");
        if (from == null) throw new NullPointerException("Illegal argument: from cannot be null");        
        
        this.flight = flight;
        this.customer = customer;
        this.from = from;
    }
    
    @Override
    public void apply(Server server) {
        server.seat(flight, customer, from);
    }

    @Override
    public String toString() {
        return "seat("+flight+","+customer+","+from+")>"+getTarget();
    }

}
